Spring Boot Disable /error mapping

Question

I am creating an API with Spring Boot so wish to disable the /error mapping.

I have set the following props in application.properties:

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Answer 1

You can disable the ErrorMvcAutoConfiguration :

@SpringBootApplication
@EnableAutoConfiguration(exclude = {ErrorMvcAutoConfiguration.class})
public class SpringBootLauncher {

Or through Spring Boot's application.yml/properties:

spring.autoconfigure.exclude: org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration

If this is not an option for you, you may also extend Spring's ErrorController with your own implementation:

@RestController
public class MyErrorController implements ErrorController {

    private static final String ERROR_MAPPING = "/error";

    @RequestMapping(value = ERROR_MAPPING)
    public ResponseEntity<String> error() {
        return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
    }

    @Override
    public String getErrorPath() {
        return ERROR_MAPPING;
    }

Note: Use one of the above techniques (disabled auto-configuration or implement the error-controller). Both together will not work, as mentioned in the comments.

Answer 2

Attributes should be specified via @SpringBootApplication. Example in Kotlin:

@SpringBootApplication(exclude = [ErrorMvcAutoConfiguration::class])
class SpringBootLauncher {

Answer 3

In my case the problem was with web resources referenced in the header of the login page. Specifically, css was referenced in the header, but did not actually exist in the project.

What might also be helpful, in my WebSecurityConfigurerAdapter implementation I commented out the body of configure(WebSecurity web) first, then on trying to login, instead of displaying the above error json my browser's address bar would display the url to the resource causing the problem.